Why my device will be warm?

[AC Question]

My Device HTC one M7 but During working will be warm there is application could help me

 

[belodion]

Welcome to AC.

Warm, or hot? Warm is okay....hot is a different matter.
What do you do on the phone, that causes this warmth or heat?

Posted via the Android Central App

 

[sahilkanjiyani]

This is normal if your phone is performing a lot of tasks, if this is happening in standby than it is a problem